This book offers a wealthy resource of knowledge with greatest impression and minimal muddle. precisely one thousand evidence are lined via a hundred issues, every one with 10 key issues that supply an easy yet memorable deal with at the topic. interesting details panels in addition to prolonged captions enlarge this fast fireplace method.

The 1st variation of residing Downstream—an beautiful combination of specified technological know-how and fascinating narrative—set a brand new normal for medical writing. Poet, biologist, and melanoma survivor, Steingraber makes use of all 3 varieties of adventure to enquire the hyperlinks among melanoma and environmental pollutants.

"Treeless, point, and semi-arid. " Walter Prescott Webb's well-known description of the good Plains is admittedly merely a part of their tale. From their construction on the finish of the Ice Age to the continued difficulties of depopulation, soil erosion, polluted streams, and depleted groundwater aquifers, human interplay with the prairies has usually been arguable.

Instead of the 25 to 30 chapters present in such a lot environmental technological know-how textbooks, the authors have restricted ideas of Environmental technology: Inquiry and purposes to fifteen chapters--perfect for the one-semester, non-majors environmental technological know-how direction. precise to its identify, the target of this concise textual content is to supply an up to date, introductory view of crucial issues in environmental technological know-how besides delivering scholars a number of possibilities to perform medical considering and energetic studying.

The former presence of forest in the interior of Antarctica has been known since fossils of ancient ‘seed-fern’ trees (Glossopteris) were collected from the Transantarctic Mountains by Captain Scott and his team during their ill-fated return journey from the South Pole in 1912. Until about 30 million years ago, forests of Nothofagus (southern beech) existed in Antarctica. Important to the cooling of Antarctica during the Cainozoic was the opening up of a wide sea between Antarctica and Australia after c.

Observation of the rates of glacial processes acting today also enables inferences to be made about how long it took for various glacial deposits and landforms to form in the past. Similarly, present-day measurement of the accumulation rate of sediment on a lake bed can be used to approximate the number of years represented per unit depth downwards along a core sample of the lake sediment so that the time spanned by the sedimentary sequence can be estimated (although this method is not without its problems as described in Chapter 2).

In fact, it is sometimes very difficult to determine the source area (provenance) of a deposit accurately and to make correct inferences about whether the deposit provides past environmental information at the local, regional, continental, or global scale. There can be uncertainty even when comparing different deposits of very similar nature, as for example the spatial scale represented by evidence preserved in lake sediments may vary with the size and characteristics of the lake, with what part of the lake is sampled, and with atmospheric, hydrological and ecological conditions prevailing at the time of deposition.